// ==UserScript==
// @name DuoFarmer
// @namespace https://duo-farmer.vercel.app
// @version 1.2
// @description [ LITE ] DuoFarmer is a tool that helps you earn XP in Duolingo at blazing speed.
// @description:vi [ LITE ] DuoFarmer là một công cụ giúp bạn hack XP trong Duolingo với tốc độ cực nhanh.
// @description:fr [ LITE ] DuoFarmer est un outil qui vous aide à gagner de l'XP sur Duolingo à une vitesse fulgurante.
// @description:es [ LITE ] DuoFarmer es una herramienta que te ayuda a ganar XP en Duolingo a una velocidad asombrosa.
// @description:de [ LITE ] DuoFarmer ist ein Tool, das Ihnen hilft, in Duolingo blitzschnell XP zu verdienen.
// @description:it [ LITE ] DuoFarmer è uno strumento che ti aiuta a guadagnare XP su Duolingo a una velocità incredibile.
// @description:ja [ LITE ] DuoFarmer は、Duolingo で驚異的なスピードで XP を獲得するのに役立つツールです。
// @description:ko [ LITE ] DuoFarmer는 Duolingo에서 엄청난 속도로 XP를 얻을 수 있도록 도와주는 도구입니다.
// @description:ru [ LITE ] DuoFarmer - это инструмент, который помогает вам зарабатывать XP в Duolingo с невероятной скоростью.
// @description:zh-CN [ LITE ] DuoFarmer 是一款可帮助您以惊人的速度在 Duolingo 中赚取 XP 的工具。
// @author Lamduck
// @match https://*.duolingo.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=duolingo.com
// @grant none
// @license none
// ==/UserScript==
const VERSION = "1.2";
const DELAY = 500;
var jwt, defaultHeaders, userInfo, sub;
let isRunning = false;
const initInterface = () => {
const containerHTML = `
<link rel="stylesheet" href="xp.css" />
<div id="_overlay"></div>
<div id="_container">
<div id="_header">
<span class="_label">Duofarmer minimal UI</span>
</div>
<div id="_body">
<table id="_table_main" class="_table">
<thead>
<tr>
<th>Username</th>
<th>From</th>
<th>Learning</th>
</tr>
</thead>
<tbody>
<tr>
<td id="_username">duofarmer</td>
<td id="_from">any</td>
<td id="_learn">any</td>
</tr>
</tbody>
</table>
<table id="_table_progress" class="_table">
<thead>
<tr>
<th>Streak</th>
<th>Gem</th>
<th>XP</th>
</tr>
</thead>
<tbody>
<tr>
<td id="_streak">0</td>
<td id="_gem">0</td>
<td id="_xp">0</td>
</tr>
</tbody>
</table>
<div id="_action_row">
<select id="_select_option">
<!-- <option value="option1">Option 1</option> -->
<!-- <option value="option2">Option 2</option> -->
</select>
<button id="_start_btn">Start</button>
<button id="_stop_btn" hidden>Stop</button>
</div>
<div id="_notify">
This is a minimal version that reduces device resources. <br />
Only support learning language is English. <br />
(will not work if from language is also English) <br>
<br>
Recommended to go to blank page for max performance + reduce resource usage.
</div>
<a id="_blank_page_link" href="https://www.duolingo.com/errors/404.html">Blank page (click here)</a>
</div>
<div id="_footer">
<a href="https://greasyfork.org/vi/scripts/528621-duofarmer" target="_blank"
>Greasyfork</a
>
<a href="https://t.me/duofarmer" target="_blank">Telegram</a>
<a>Version <span id="_version">1.0</span></a>
</div>
</div>
<div id="_floating_btn">😼</div>
`;
const style = document.createElement("style");
style.innerHTML = `#_container {
width: 90vw;
max-width: 800px;
min-height: 40vh;
max-height: 90vh;
background: #222;
color: #fff;
border-radius: 10px;
box-shadow: 0 2px 12px #0008;
font-family: sans-serif;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
z-index: 9999;
}
#_header {
height: 60px;
background: #333;
display: flex;
align-items: center;
justify-content: center;
border-top-left-radius: 10px;
border-top-right-radius: 10px;
width: 100%;
}
#_body {
min-height: 40vh;
max-height: 100%;
min-width: 0;
background: #282828;
display: flex;
align-items: center;
justify-content: center;
width: 100%;
overflow-y: auto;
flex: 1;
flex-direction: column;
}
#_footer {
height: 50px;
background: #222;
display: flex;
align-items: center;
justify-content: space-evenly;
border-bottom-left-radius: 10px;
border-bottom-right-radius: 10px;
width: 100%;
}
._label {
font-size: 1em;
}
#_header ._label {
font-size: 1.5em;
font-style: italic;
font-weight: bold;
color: #fac8ff;
}
#_body ._label {
font-size: 1.2em;
}
._table {
width: 100%;
background: #232323;
color: #fff;
border-radius: 8px;
padding: 8px 12px;
text-align: center;
table-layout: fixed;
}
._table th,
._table td {
padding: 9px 12px;
text-align: center;
border-bottom: 1px solid #444;
width: 1%;
}
._table tbody tr:last-child td {
border-bottom: none;
}
#_body h3 {
margin: 0;
color: #fff;
font-size: 1.1em;
font-weight: bold;
letter-spacing: 1px;
}
#_action_row {
width: 90%;
display: flex;
justify-content: space-between;
align-items: center;
margin: 8px 0;
gap: 8px;
}
#_select_option {
width: 90%;
max-width: 90%;
margin-right: 8px;
padding: 8px 12px;
border-radius: 6px;
border: 1px solid #444;
background: #232323;
color: #fff;
font-size: 1em;
outline: none;
}
#_start_btn, #_stop_btn {
width: auto;
margin-left: 0;
padding: 8px 18px;
border-radius: 6px;
border: none;
background: #229100;
color: #fff;
font-size: 1em;
font-weight: bold;
cursor: pointer;
box-shadow: 0 2px 8px #0003;
}
#_stop_btn {
background: #af0303;
}
._disable_btn {
background: #52454560 !important;
cursor: not-allowed !important;
}
#_notify {
width: 90%;
max-width: 90%;
min-height: 10vh;
margin: 8px 0;
padding: 8px 12px;
border-radius: 6px;
background: #333;
color: #c8ff00;
font-size: 1em;
word-wrap: break-word;
/* text-align: center; */
}
#_blank_page_link {
margin-bottom: 8px;
color: #fce6ff;
font-weight: bold;
font-style: italic;
}
#_footer a,
#_footer span {
text-decoration: none;
color: #00aeff;
font-size: 1em;
font-weight: bold;
font-style: italic;
}
#_overlay {
position: fixed;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
background: rgba(0,0,0,0.8);
z-index: 9998;
pointer-events: all;
}
#_floating_btn {
position: fixed;
bottom: 10%;
right: 2%;
width: 40px;
height: 40px;
background: #35bd00;
border-radius: 50%;
box-shadow: 0 2px 8px #0005;
z-index: 10000;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
}
.hidden{
display: none;
}`;
document.head.appendChild(style);
const container = document.createElement("div");
container.innerHTML = containerHTML;
document.body.appendChild(container);
// doi phien ban
const version = document.getElementById("_version");
version.innerText = VERSION;
};
const setInterfaceVisible = (visible) => {
const container = document.getElementById("_container");
const overlay = document.getElementById("_overlay");
container.style.display = visible ? "flex" : "none";
overlay.style.display = visible ? "block" : "none";
};
const isInterfaceVisible = () => {
const container = document.getElementById("_container");
return container.style.display !== "none" && container.style.display !== "";
};
const toggleInterface = () => {
setInterfaceVisible(!isInterfaceVisible());
};
const addEventFloatingBtn = () => {
const floatingBtn = document.getElementById("_floating_btn");
const startBtn = document.getElementById("_start_btn");
const stopBtn = document.getElementById("_stop_btn");
const select = document.getElementById("_select_option");
floatingBtn.addEventListener("click", () => {
if (isRunning) {
if (confirm("Duofarmer is farming. Do you want to stop and hide UI?")) {
isRunning = false;
stopBtn.hidden = true;
startBtn.hidden = false;
startBtn.disabled = true;
startBtn.className = "_disable_btn";
select.disabled = false;
setTimeout(() => {
startBtn.className = "";
startBtn.disabled = false;
}, 2000);
setInterfaceVisible(false);
return;
} else {
// Không làm gì nếu không muốn dừng
return;
}
}
setInterfaceVisible(!isInterfaceVisible());
});
};
const addEventStartBtn = () => {
const startBtn = document.getElementById("_start_btn");
const stopBtn = document.getElementById("_stop_btn");
const select = document.getElementById("_select_option");
startBtn.addEventListener("click", async () => {
isRunning = true;
startBtn.hidden = true;
stopBtn.hidden = false;
stopBtn.disabled = true;
stopBtn.className = "_disable_btn";
select.disabled = true;
// Lấy option đang chọn
const selected = select.options[select.selectedIndex];
const optionData = {
type: selected.getAttribute("data-type"),
amount: Number(selected.getAttribute("data-amount")),
from: selected.getAttribute("data-from"),
learn: selected.getAttribute("data-learn"),
value: selected.value,
label: selected.textContent,
};
await farmSelectedOption(optionData);
setTimeout(() => {
stopBtn.className = "";
stopBtn.disabled = false;
}, 2000);
});
};
const addEventStopBtn = () => {
const startBtn = document.getElementById("_start_btn");
const stopBtn = document.getElementById("_stop_btn");
const select = document.getElementById("_select_option");
stopBtn.addEventListener("click", () => {
isRunning = false;
stopBtn.hidden = true;
startBtn.hidden = false;
startBtn.disabled = true;
startBtn.className = "_disable_btn";
select.disabled = false;
setTimeout(() => {
startBtn.className = "";
startBtn.disabled = false;
}, 2000);
});
};
const addEventVersionLink = () => {
const versionLink = document.getElementById("_version");
versionLink.addEventListener("click", () => {
prompt("Your JWT token: ", jwt);
});
};
const addEventListeners = () => {
addEventFloatingBtn();
addEventStartBtn();
addEventStopBtn();
addEventVersionLink();
};
// Thêm hàm tạo option cho select
const populateOptions = () => {
const select = document.getElementById("_select_option");
select.innerHTML = "";
// Lấy fromLanguage và learningLanguage từ userInfo nếu có
const fromLang = userInfo?.fromLanguage || "ru";
const learnLang = userInfo?.learningLanguage || "en";
// Danh sách option mẫu
const options = [
{ type: "gem", label: `Gem 30`, value: `gem-30`, amount: 30 },
{
type: "xp",
label: `XP 499 (any -> en)`,
value: `xp-499`,
amount: 499,
from: fromLang,
learn: "en",
},
{
type: "streak",
label: `Streak repair (restore frozen streak)`,
value: `repair`,
},
{
type: "streak",
label: `Streak farm (beta test)`,
value: `farm`,
},
];
options.forEach((opt) => {
const option = document.createElement("option");
option.value = opt.value;
option.textContent = opt.label;
option.setAttribute("data-type", opt.type);
option.setAttribute("data-amount", opt.amount);
option.setAttribute("data-from", opt.from);
option.setAttribute("data-learn", opt.learn);
select.appendChild(option);
});
};
const updateNotify = (message) => {
const notify = document.getElementById("_notify");
const now = new Date().toLocaleTimeString();
notify.innerText = `[${now}] ` + message;
};
const disableInterface = (notify = {}) => {
const startBtn = document.getElementById("_start_btn");
const stopBtn = document.getElementById("_stop_btn");
const select = document.getElementById("_select_option");
startBtn.disabled = true;
startBtn.className = "_disable_btn";
stopBtn.disabled = true;
select.disabled = true;
if (notify) {
const notifyElement = document.getElementById("_notify");
notifyElement.innerText = notify;
}
};
const resetStartStopBtn = () => {
isRunning = false;
const startBtn = document.getElementById("_start_btn");
const stopBtn = document.getElementById("_stop_btn");
const select = document.getElementById("_select_option");
stopBtn.hidden = true;
startBtn.hidden = false;
startBtn.disabled = true;
startBtn.className = "_disable_btn";
select.disabled = false;
setTimeout(() => {
startBtn.className = "";
startBtn.disabled = false;
}, 2000);
};
const blockStopBtn = () => {
const stopBtn = document.getElementById("_stop_btn");
stopBtn.disabled = true;
stopBtn.classList.add("_disable_btn");
};
const unblockStopBtn = () => {
const stopBtn = document.getElementById("_stop_btn");
stopBtn.disabled = false;
stopBtn.classList.remove("_disable_btn");
};
//--------------------Logic--------------------//
const getJwtToken = () => {
var cookies = document.cookie.split(";");
for (var i = 0; i < cookies.length; i++) {
var cookie = cookies[i].trim();
if (cookie.startsWith("jwt_token=")) {
return cookie.substring("jwt_token=".length);
}
}
return null;
};
const decodeJwtToken = (token) => {
var base64Url = token.split(".")[1];
var base64 = base64Url.replace(/-/g, "+").replace(/_/g, "/");
var jsonPayload = decodeURIComponent(
atob(base64)
.split("")
.map(function (c) {
return "%" + ("00" + c.charCodeAt(0).toString(16)).slice(-2);
})
.join("")
);
return JSON.parse(jsonPayload);
};
const formatHeaders = (jwt) => ({
"Content-Type": "application/json",
Authorization: "Bearer " + jwt,
"User-Agent": navigator.userAgent,
});
const getUserInfo = async (sub) => {
const userInfoUrl = `https://www.duolingo.com/2017-06-30/users/${sub}?fields=id,username,fromLanguage,learningLanguage,streak,totalXp,level,numFollowers,numFollowing,gems,creationDate,streakData`;
let response = await fetch(userInfoUrl, {
method: "GET",
headers: defaultHeaders,
});
return await response.json();
};
const delay = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
const updateUserInfo = () => {
const username = document.getElementById("_username");
const from = document.getElementById("_from");
const learn = document.getElementById("_learn");
const streak = document.getElementById("_streak");
const gem = document.getElementById("_gem");
const xp = document.getElementById("_xp");
username.innerText = userInfo.username;
from.innerText = userInfo.fromLanguage;
learn.innerText = userInfo.learningLanguage;
streak.innerText = userInfo.streak;
gem.innerText = userInfo.gems;
xp.innerText = userInfo.totalXp;
};
const toTimestamp = (dateStr) => {
return Math.floor(new Date(dateStr).getTime() / 1000);
};
const daysBetween = (startTimestamp, endTimestamp) => {
return Math.floor((endTimestamp - startTimestamp) / (60 * 60 * 24));
};
const sendRequest = async ({ url, payload, headers, method = "PUT" }) => {
try {
const res = await fetch(url, {
method,
headers,
body: payload ? JSON.stringify(payload) : undefined,
});
return res;
} catch (error) {
return error;
}
};
const sendRequestWithDefaultHeaders = async ({
url,
payload,
headers = {},
method = "GET",
}) => {
const mergedHeaders = { ...defaultHeaders, ...headers };
return sendRequest({ url, payload, headers: mergedHeaders, method });
};
const farmGemOnce = async () => {
const idReward =
"SKILL_COMPLETION_BALANCED-dd2495f4_d44e_3fc3_8ac8_94e2191506f0-2-GEMS";
const patchUrl = `https://www.duolingo.com/2017-06-30/users/${sub}/rewards/${idReward}`;
const patchData = {
consumed: true,
learningLanguage: userInfo.learningLanguage,
fromLanguage: userInfo.fromLanguage,
};
return await sendRequestWithDefaultHeaders({
url: patchUrl,
payload: patchData,
method: "PATCH",
});
};
const farmGemLoop = async () => {
const gemFarmed = 30;
while (isRunning) {
try {
await farmGemOnce();
userInfo = { ...userInfo, gems: userInfo.gems + gemFarmed };
updateNotify(`You got ${gemFarmed} gem!!!`);
updateUserInfo();
await delay(DELAY);
} catch (error) {
updateNotify(
`Error ${error.status}! Please record screen and report in telegram group!`
);
await delay(DELAY + 1000);
}
}
};
const farmXpOnce = async (amount) => {
const startTime = Math.floor(Date.now() / 1000);
const fromLanguage = userInfo.fromLanguage;
const completeUrl = `https://stories.duolingo.com/api2/stories/en-${fromLanguage}-the-passport/complete`;
const payload = {
awardXp: true,
isFeaturedStoryInPracticeHub: false,
completedBonusChallenge: true,
mode: "READ",
isV2Redo: false,
isV2Story: false,
isLegendaryMode: true,
masterVersion: false,
maxScore: 0,
numHintsUsed: 0,
score: 0,
startTime: startTime,
fromLanguage: fromLanguage,
learningLanguage: "en",
hasXpBoost: false,
happyHourBonusXp: 449,
};
return await sendRequestWithDefaultHeaders({
url: completeUrl,
payload: payload,
headers: defaultHeaders,
method: "POST",
});
};
const farmXpLoop = async (amount) => {
while (isRunning) {
try {
const response = await farmXpOnce(amount);
if (response.status == 500) {
updateNotify(
"Make sure you are on English course (learning lang must be EN)!"
);
await delay(DELAY + 1000);
continue;
}
const responseData = await response.json();
const xpFarmed = responseData?.awardedXp || 0;
userInfo = { ...userInfo, totalXp: userInfo.totalXp + xpFarmed };
updateNotify(`You got ${xpFarmed} XP!!!`);
updateUserInfo();
await delay(DELAY);
} catch (error) {
updateNotify(
`Error ${error.status}! Please record screen and report in telegram group!`
);
await delay(DELAY + 1000);
}
}
};
const farmSessionOnce = async (startTime, endTime) => {
//tạo và lấy session
const sessionPayload = {
challengeTypes: [
"assist",
"characterIntro",
"characterMatch",
"characterPuzzle",
"characterSelect",
"characterTrace",
"characterWrite",
"completeReverseTranslation",
"definition",
"dialogue",
"extendedMatch",
"extendedListenMatch",
"form",
"freeResponse",
"gapFill",
"judge",
"listen",
"listenComplete",
"listenMatch",
"match",
"name",
"listenComprehension",
"listenIsolation",
"listenSpeak",
"listenTap",
"orderTapComplete",
"partialListen",
"partialReverseTranslate",
"patternTapComplete",
"radioBinary",
"radioImageSelect",
"radioListenMatch",
"radioListenRecognize",
"radioSelect",
"readComprehension",
"reverseAssist",
"sameDifferent",
"select",
"selectPronunciation",
"selectTranscription",
"svgPuzzle",
"syllableTap",
"syllableListenTap",
"speak",
"tapCloze",
"tapClozeTable",
"tapComplete",
"tapCompleteTable",
"tapDescribe",
"translate",
"transliterate",
"transliterationAssist",
"typeCloze",
"typeClozeTable",
"typeComplete",
"typeCompleteTable",
"writeComprehension",
],
fromLanguage: userInfo.fromLanguage,
isFinalLevel: false,
isV2: true,
juicy: true,
learningLanguage: userInfo.learningLanguage,
smartTipsVersion: 2,
type: "GLOBAL_PRACTICE",
};
const sessionRes = await sendRequestWithDefaultHeaders({
url: "https://www.duolingo.com/2017-06-30/sessions",
payload: sessionPayload,
method: "POST",
});
const sessionData = await sessionRes.json();
// lấy session và gán vào update
const updateSessionPayload = {
...sessionData,
heartsLeft: 0,
startTime: startTime,
enableBonusPoints: false,
endTime: endTime,
failed: false,
maxInLessonStreak: 9,
shouldLearnThings: true,
};
const updateRes = await sendRequestWithDefaultHeaders({
url: `https://www.duolingo.com/2017-06-30/sessions/${sessionData.id}`,
payload: updateSessionPayload,
method: "PUT",
});
return await updateRes.json();
};
const repairStreak = async () => {
blockStopBtn();
try {
if(!userInfo.streakData.currentStreak) {
updateNotify("You have no streak! Abort!");
resetStartStopBtn();
}
const startStreakDate = userInfo.streakData.currentStreak.startDate;
const endStreakDate = userInfo.streakData.currentStreak.endDate;
const startStreakTimestamp = toTimestamp(startStreakDate);
const endStreakTimestamp = toTimestamp(endStreakDate);
const expectedStreak =
daysBetween(startStreakTimestamp, endStreakTimestamp) + 1; //+1 vì nó bị lệch gì đó
//check xem có streak freeze không
if (expectedStreak > userInfo.streak) {
updateNotify("Your streak is frozen somewhere! Repairing...");
await delay(2000);
let currentTimestamp = Math.floor(Date.now() / 1000);
for (let i = 0; i < expectedStreak; i++) {
const createdSession = await farmSessionOnce(
currentTimestamp,
currentTimestamp + 60
);
currentTimestamp -= 86400;
updateNotify(
`Trying to repair streak ( ${i + 1}/${expectedStreak})...`
);
await delay(DELAY);
}
const userAfterRepair = await getUserInfo(sub);
if (userAfterRepair.streakData.currentStreak.length > expectedStreak) {
updateNotify(`Your streak has been repaired! No more frozen streak!`);
userInfo = userAfterRepair;
updateUserInfo();
} else {
updateNotify(
`Streak repair failed or no frozen streak! Please check your account!`
);
}
} else {
updateNotify("You have no frozen streak! No need to repair!");
resetStartStopBtn();
return;
}
} finally {
unblockStopBtn();
}
};
const farmStreakLoop = async () => {
const hasStreak = !!userInfo.streakData.currentStreak;
const startStreakDate = hasStreak
? userInfo.streakData.currentStreak.startDate
: new Date();
const startFarmStreakTimestamp = toTimestamp(startStreakDate);
let currentTimestamp = hasStreak
? startFarmStreakTimestamp - 86400 // Nếu đã có streak, farm từ ngày trước đó
: startFarmStreakTimestamp; // Nếu chưa có streak, farm luôn ngày hôm nay
while (isRunning) {
try {
const sessionRes = await farmSessionOnce(currentTimestamp, currentTimestamp + 60);
if (sessionRes) {
currentTimestamp -= 86400;
userInfo = { ...userInfo, streak: userInfo.streak + 1 };
updateNotify(`You got +1 streak!`);
updateUserInfo();
await delay(DELAY);
} else {
updateNotify("Failed to farm streak session, I'm trying again...");
await delay(2000);
continue;
}
} catch (error) {
updateNotify(`Error in farmStreak: ${error?.message || error}`);
await delay(2000);
continue;
}
}
}
const farmSelectedOption = async (option) => {
const { type, value, amount, from, learn } = option;
switch (type) {
case "gem":
farmGemLoop();
break;
case "xp":
farmXpLoop(amount);
break;
case "streak":
if (value == "repair") {
repairStreak();
} else if (value == "farm") {
farmStreakLoop();
}
break;
}
};
const initVariables = async () => {
jwt = getJwtToken();
if (!jwt) {
disableInterface("Please login to Duolingo and reload!");
return;
}
defaultHeaders = formatHeaders(jwt);
const decodedJwt = decodeJwtToken(jwt);
sub = decodedJwt.sub;
userInfo = await getUserInfo(sub);
populateOptions(); // cập nhật lại option khi đã có userInfo
};
//--------------------Main--------------------//
(async () => {
initInterface();
setInterfaceVisible(false);
addEventListeners();
await initVariables();
updateUserInfo();
})();
